Process Async Operations in Batches with given Batch Size in C#

Main.cs

public static class BatchOperations
{
    public static async Task Process<T>(int batchSize, IReadOnlyList<T> items, Func<IReadOnlyList<T>, Task> processBatch)
    {
        var processed = 0;
        while(processed < items.Count)
        {
            var batch = items.Skip(processed).Take(batchSize).ToList();
            await processBatch(batch);
            processed += batchSize;
        }
    }
}

public class Program {
  async public void Main() {
    await Process(40, Enumerable.Range(1, 100).ToList(), async batch => {
        await Task.Delay(100);
        Console.WriteLine($"Processed batch of {batch.Count} items");
    });
    Console.WriteLine($"Processed 100 items");
  }
}

// This will output
// Processed batch of 40 items
// Processed batch of 40 items
// Processed batch of 20 items
// Processed 100 items